Add AuthPolicyLoginHelper

chromeos/dbus/fake_auth_policy_client.cc

Index: chromeos/dbus/fake_auth_policy_client.cc
diff --git a/chromeos/dbus/fake_auth_policy_client.cc b/chromeos/dbus/fake_auth_policy_client.cc
index 0231e29fb2f6ccd1d6e9b67db672ce2d6b676710..3df84c65642d44fb69203394ffcdc6ad7144996d 100644
--- a/chromeos/dbus/fake_auth_policy_client.cc
+++ b/chromeos/dbus/fake_auth_policy_client.cc
@@ -13,6 +13,7 @@
 #include "base/strings/string_split.h"
 #include "base/task_scheduler/post_task.h"
 #include "base/threading/platform_thread.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/chromeos/policy/proto/chrome_device_policy.pb.h"
 #include "chromeos/chromeos_paths.h"
 #include "chromeos/cryptohome/cryptohome_parameters.h"
@@ -29,8 +30,8 @@ namespace {
 const size_t kMaxMachineNameLength = 15;
 const char kInvalidMachineNameCharacters[] = "\\/:*?\"<>|";
 
-// Delay policy fetch to be more realistic.
-constexpr int kPolicyFetchDelaySeconds = 5;
+// Delay operations to be more realistic.
+constexpr int kOperationDelaySeconds = 3;
 
 // Drop stub policy file of |policy_type| at |policy_path| containing
 // |serialized_payload|.
@@ -38,7 +39,7 @@ bool WritePolicyFile(const base::FilePath& policy_path,
                      const std::string& serialized_payload,
                      const std::string& policy_type) {
   base::PlatformThread::Sleep(
-      base::TimeDelta::FromSeconds(kPolicyFetchDelaySeconds));
+      base::TimeDelta::FromSeconds(kOperationDelaySeconds));
 
   em::PolicyData data;
   data.set_policy_value(serialized_payload);
@@ -62,6 +63,11 @@ bool WritePolicyFile(const base::FilePath& policy_path,
   return bytes_written == static_cast<int>(serialized_response.size());
 }
 
+void PostDelayedClosure(const base::Closure& closure) {
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+      FROM_HERE, closure, base::TimeDelta::FromSeconds(kOperationDelaySeconds));
+}
+
 }  // namespace
 
 namespace chromeos {
@@ -76,46 +82,41 @@ void FakeAuthPolicyClient::JoinAdDomain(const std::string& machine_name,
                                         const std::string& user_principal_name,
                                         int password_fd,
                                         const JoinCallback& callback) {
+  authpolicy::ErrorType error = authpolicy::ERROR_NONE;
   if (!started_) {
     LOG(ERROR) << "authpolicyd not started";
-    callback.Run(authpolicy::ERROR_DBUS_FAILURE);
-    return;
+    error = authpolicy::ERROR_DBUS_FAILURE;
+  } else if (machine_name.size() > kMaxMachineNameLength) {
+    error = authpolicy::ERROR_MACHINE_NAME_TOO_LONG;
+  } else if (machine_name.empty() ||
+             machine_name.find_first_of(kInvalidMachineNameCharacters) !=
+                 std::string::npos) {
+    error = authpolicy::ERROR_BAD_MACHINE_NAME;
+  } else {
+    std::vector<std::string> parts = base::SplitString(
+        user_principal_name, "@", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
+    if (parts.size() != 2 || parts[0].empty() || parts[1].empty()) {
+      error = authpolicy::ERROR_PARSE_UPN_FAILED;
+    }
   }
-  if (machine_name.size() > kMaxMachineNameLength) {
-    callback.Run(authpolicy::ERROR_MACHINE_NAME_TOO_LONG);
-    return;
-  }
-
-  if (machine_name.empty() ||
-      machine_name.find_first_of(kInvalidMachineNameCharacters) !=
-          std::string::npos) {
-    callback.Run(authpolicy::ERROR_BAD_MACHINE_NAME);
-    return;
-  }
-
-  std::vector<std::string> parts = base::SplitString(
-      user_principal_name, "@", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
-  if (parts.size() != 2 || parts[0].empty() || parts[1].empty()) {
-    callback.Run(authpolicy::ERROR_PARSE_UPN_FAILED);
-    return;
-  }
-
-  callback.Run(authpolicy::ERROR_NONE);
+  PostDelayedClosure(base::Bind(callback, error));
 }
 
 void FakeAuthPolicyClient::AuthenticateUser(
     const std::string& user_principal_name,
     int password_fd,
     const AuthCallback& callback) {
+  authpolicy::ErrorType error = authpolicy::ERROR_NONE;
   authpolicy::ActiveDirectoryAccountData account_data;
   if (!started_) {
     LOG(ERROR) << "authpolicyd not started";
-    callback.Run(authpolicy::ERROR_DBUS_FAILURE, account_data);
-    return;
+    error = authpolicy::ERROR_DBUS_FAILURE;
+  } else {
+    if (auth_error_ == authpolicy::ERROR_NONE)
+      account_data.set_account_id(base::MD5String(user_principal_name));
+    error = auth_error_;
   }
-  if (auth_error_ == authpolicy::ERROR_NONE)
-    account_data.set_account_id(base::MD5String(user_principal_name));
-  callback.Run(auth_error_, account_data);
+  PostDelayedClosure(base::Bind(callback, error, account_data));
 }
 
 void FakeAuthPolicyClient::RefreshDevicePolicy(